Add criteria

Author: jonaharagon

Diff for: docs/calendar.md

@@ -9,8 +9,7 @@ Calendars contain some of your most sensitive data; use products that implement
 
 !!! recommendation
 
-    ![Tutanota logo](assets/img/calendar/tutanota.svg#only-light){ align=right }
-    ![Tutanota logo](assets/img/calendar/tutanota-dark.svg#only-dark){ align=right }
+    ![Tutanota logo](assets/img/calendar/tutanota.svg){ align=right }
 
     **Tutanota** offers a free and encrypted calendar across their supported platforms. Features include: automatic E2EE of all data, sharing features, import/export functionality, multi-factor authentication, and [more](https://tutanota.com/calendar-app-comparison/).
 

Diff for: docs/email.md

@@ -3,9 +3,9 @@ title: "Email Services"
 icon: material/email
 description: These email providers offer a great place to store your emails securely, and many offer interoperable OpenPGP encryption with other providers.
 ---
-Email is practically a necessity for using any online service, however we do not recommend it for person-to-person conversations. Rather than using email to contact other people, consider using an instant messaging medium that supports forward secrecy.
+Email is practically a necessity for using any online service, however we do not recommend it for person-to-person conversations. Rather than using email to contact other people, consider using an instant messaging medium that supports forward secrecy:
 
-[Recommended Instant Messengers](real-time-communication.md){ .md-button }
+[Recommended Instant Messengers :material-arrow-right-drop-circle:](real-time-communication.md){ .md-button }
 
 For everything else, we recommend a variety of email providers based on sustainable business models and built-in security and privacy features.
 

Diff for: docs/voip.md

@@ -5,6 +5,12 @@ description: These providers allow you to obtain a phone number without providin
 ---
 **Voice-over-IP** is the technology which allows phone calls and text messages to be sent over the internet. Consumer VoIP providers are often used as a way to obtain a secondary phone number or multiple phone numbers without providing identifying information. Phone numbers are commonly used by internet services to uniquely identify you, so using the same number between every service is a fingerprinting tactic service providers can use to track you. It is also often more challenging for most people to change their "primary" phone number, so using a secondary VoIP number with less important services and contacts can save you a huge hassle when that secondary phone number is compromised.
 
+It is important to note that VoIP in general is not anonymous or particularly secure. These providers offer improved privacy by allowing you to obtain a phone number without providing your personal information, and by allowing you to easily create and dispose of phone numbers as needed, but they do **not** provide encrypted communications, so the service provider will always have full insight into your communications.
+
+For sensitive person-to-person communications, we strongly recommend using an instant messaging medium that supports forward secrecy instead:
+
+[Recommended Instant Messengers :material-arrow-right-drop-circle:](real-time-communication.md){ .md-button }
+
 ## Cloud Hosted
 
 ### JMP.chat
@@ -70,6 +76,10 @@ MySudo requires regisration via their mobile app, and has no desktop client (onl
         - [:simple-appstore: App Store](https://apps.apple.com/us/app/hushed-second-phone-number/id600520752)
         - [:octicons-globe-16: Web](https://app.hushed.com/signup)
 
+!!! warning
+
+    Hushed's mobile apps and website do have some privacy unfriendly [dependencies](https://reports.exodus-privacy.eu.org/en/reports/com.hushed.release/latest/), including Google Analytics.
+
 Hushed occasionally offers "[lifetime](https://stacksocial.com/sales/hushed-private-phone-1-line-plan-1000-mins-6000-sms)" plans, which makes it a popular affordable option for a single secondary phone number. Remember that lifetime plans last for the lifetime of the service, not your own lifetime.
 
 Hushed allows registrations via their website, making them the easiest VoIP provider choice if you don't have a mobile device.
@@ -114,3 +124,16 @@ Twilio or Vonage both require an existing phone number to register. According to
     [:octicons-info-16:](https://github.com/0perationPrivacy/voip/wiki){ .card-link title=Documentation}
 
 If you have a Twilio or Telnyx account you can use the official hosted online service at [voip.operationprivacy.com](https://voip.operationprivacy.com/) with your own API keys, however this does give the instance provider insight into your messages. You can also [host it for free on Render](https://github.com/0perationPrivacy/voip/wiki/Cloud-Hosting) or [host it on your own Linux server](https://github.com/0perationPrivacy/VoIP/discussions/49).
+
+## Criteria
+
+**Please note we are not affiliated with any of the projects we recommend.** In addition to [our standard criteria](about/criteria.md), we have developed a clear set of requirements to allow us to provide objective recommendations. We suggest you familiarize yourself with this list before choosing to use a project, and conduct your own research to ensure it's the right choice for you.
+
+!!! example "This section is new"
+
+    We are working on establishing defined criteria for every section of our site, and this may be subject to change. If you have any questions about our criteria, please [ask on our forum](https://discuss.privacyguides.net/latest) and don't assume we didn't consider something when making our recommendations if it is not listed here. There are many factors considered and discussed when we recommend a project, and documenting every single one is a work-in-progress.
+
+- Does not require personal phone number for registration.
+- Offers multiple phone numbers.
+- Capable of SMS, MMS, and standard voice calls to non-VoIP phone numbers.
+- Available on iOS and Android.

Diff for: theme/assets/img/calendar/tutanota-dark.svg

@@ -0,0 +1 @@
+../email/tutanota.svg