I've been using FastMail.fm for around 4 years now. It's absolutely worth the $40/yr. I manage a lot of email accounts, and FastMail lets me define rules to file emails from different accounts into different folders, and automatically set my from/reply-to address based on the folder I'm in. Their spam handling has been excellent and there are tons of other small features like one-time-passwords which are great.
That said, I do find GMail's interface "snappier" than FastMail's, and threaded conversations are definitely nice to have. I'm starting to see GMail's benefit in tagging messages instead of using a folder hierarchy, but for managing email from multiple accounts, FastMail is definitely easier.
Fastmail is a great service for a modest price. Definitely worth it unless you want (or need) to spring for MS Hosted Exchange in which case I'd Rackspace.
Another idea: Since Apple knows exactly how much money I've spent in their store, that signal can somehow also be weighed in with my reviews.
This means that reviews by people that have spent a fair amount in the app store would get a better/heavier scores than those that have not yet spent as much money in the store.
This would be susceptible to the same problems as Chris mentions in his post:
> Companies like TapJoy let you pay to get in the Top 25, and then once you are there you can get “organic” downloads by being on the toplists.
If they can arrange to actually buy enough copies of an application to get into the Top 25, reviews posted by those accounts would surely weigh very highly under your proposed scheme as well.
Use feature detection rather than browser/UA sniffing. Tools such as http://www.modernizr.com and http://www.headjs.com (limited feature detection but also provides other features) can be very helpful.
Thanks for making it free. I'm trying it out right now. For me, it lacks one critical feature that another competig app seems to provide: a timer. I'm using both discrete counters and timers to time tasks and completion time. Not a big issue, but something to keep in mind. Thanks for making it free and all the best!