docs: clarify sponsorship tiers, payment terms, and editorial policy

- Link awesome-python.com in sponsor descriptions
- Add 120-character limit for sponsor descriptions
- Reword Link Sponsor tier to clarify entry format
- Replace month-to-month wording with flexible term details
- Add payment methods (ACH/wire, PayPal)
- Add editorial reserve clause for sponsor content

Co-Authored-By: Claude <noreply@anthropic.com>

Author: vinta

SPONSORSHIP.md

@@ -23,20 +23,21 @@ Your sponsorship puts your product in front of developers at the exact moment th
 
 ### Logo Sponsor - $500/month
 
-Your logo and a one-line description pinned to the top of the README, above all project entries. Every visitor to the repo or awesome-python.com sees it first.
+Your logo and a one-line description pinned to the top of the README, above all project entries. Every visitor to the repo or [awesome-python.com](https://awesome-python.com/) sees it first.
 
 **What you get:**
-- Logo + one-line description in the README header
-- Logo on awesome-python.com sponsor section
-- Permanent placement for the duration of your sponsorship
+
+- Logo + one-line description in the README header (description max 120 characters)
+- Logo link on [awesome-python.com](https://awesome-python.com/) sponsor section
 
 ### Link Sponsor - $150/month
 
-A text link with your product name at the top of the README, directly below logo sponsors.
+A text entry at the top of the README, directly below logo sponsors, in the same format as regular list entries: `[Name](URL) - Description.`
 
 **What you get:**
-- Text link in the README header
-- Link on awesome-python.com sponsor section
+
+- Entry in the README header (description max 120 characters)
+- Text link on [awesome-python.com](https://awesome-python.com/) sponsor section
 
 ## Previously Sponsored By
 
@@ -46,8 +47,12 @@ A text link with your product name at the top of the README, directly below logo
 
 Email [vinta.chen@gmail.com](mailto:vinta.chen@gmail.com?subject=awesome-python%20Sponsorship) with your company name and preferred tier.
 
-Setup takes less than 24 hours. Month-to-month, cancel anytime.
+**Payment:** One upfront payment per term via US bank transfer (ACH/wire) or PayPal.
+
+Setup takes less than 24 hours. Choose any term (minimum 1 month).
 
 ## Editorial Independence
 
 Sponsorship is logo/link placement in the README header. It does not influence which projects are listed. Listings are curated on merit through the normal [contribution process](CONTRIBUTING.md).
+
+We reserve the right to request changes to sponsor text, logos, or links that are misleading, off-topic, or incompatible with the README formatting.