Restrict number of articles user allowed to read, but allow Google to index all
129836
Is it possible for Google to Index a site with login?
77463
Changing URLs in Google's Index
11795
Stack Exchange: Block a site in "Filtered Questions" filters, or add a select all
118654
Articles in a list
115301
Can I Prevent Enumeration of Usernames?
55348
How to set reading permission for each separate page?
120918
Allow suppression of automatic linking of web addresses
86419
XML Feeds & PHP - Limit the number of items
95375
One hyperref per acronym per page
2406
Restricted logins with automatic full permission in databases
141381
Correctly indexing multiple domains with same content in Google and others
67756
Don't lower the review limit on Stack Overflow
44023
How do I disallow a specific query string in robots.txt?
40809
How many times can I repeat a keyword without looking spammy to Google?
107698
Allowing user to edit only certain pages
9566
Can we limit the number of rows in a table in MySQL?
57178
How to control what appears on google search results?