Befriend needs a more logical solution..
Send : Click Befriend > befriend button deactivates > "invitation sent" status instead of "member already on your friend list" if the other user did not yet accepted/refused > the other user accepts/refuses invitation > befriend button re-activates only if user refused..
Receive: If you visit the profile who sent you a invitation a button with accept invitation and reject should be visible on that profile page..
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Annabel see more is right.. a SMS system for membership payment is a must.. just because is the easiest way to encourage a normal member to upgrade, I personally never payed for a membership if does not have a sms payment option.. it takes too much energy to go to the bank for such a little amount of money.. plus you want that membership "right then".. after 5 minutes max.
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Speed improvement.. there are too many files to load and too many db queries.. optimize each template image and the header slide show images (this is mostly for the sake of the demo to load faster) which sums more than 420kb of a total of 1.4mb (front page) - so painful for dial-up users (they still exist).. I am thinking to remove it if it slows too much.. I'd rather make a random pic on each load than a slide show with 5 gigantic images.. all loading at the same time..
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I don't know how admin panel looks, but a IP tracking for each user (history of IP's used by that user) is very important to ban the trouble makers..
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Bad word filter on all pages with comments, shoutbox, chat, forum, clubs, profile descriptions, profile names, user names etc. etc.
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website png watermark on photos if they go offline, website logo on externally embedded audio and video files with link to the website when you click on them..
and list of websites linking to that file..
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contact importer redirect after first login and skip button
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custom fields builder for sign-up/profile page, CV's for users on job classifieds
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images, html code and more options for blogs..
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private photos, videos, music with group or selected users access..
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Facebook is a good example of what else Dolphin needs..
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Sorry for the long text, just my ideas - only take what you guys think is important..
Cheers.