Owdy

Updated the description to point out uploading the file is necessary.  

OK, so you can brake old posts with that feature. How about letting user to choose delete or not that image? Feature request. Remove emoticon from new posts, but not brake old ones. Best way IMO.

It's already on our internal suggestions list:)
 

I made the move to UTFMB4 while I was still on 3.4.7. I just had 4 or 5 columns left that were giving me issues which I've now resolved with @AutoItScript's help. At least it's all done now and I don't have to worry about it in future.

Thanks. That image was huge, you are right.

I don't see much change either. Things did improve. It would be nice to expand and see where these issues are.
Also, 89 requests seems rather high. I'll poke around with the url and see what I can find that can be done to help improve the speeds and such of your site and post again later, possibly editing this post.
With what I see just taking a peek, turning this image linked below into a jpg will help reduce load times and file size. From 422KB to 37KB as a jpg when I tried with: http://image.online-convert.com/convert-to-jpg
http://hoitajat.net/images/aihekuvat/etusivu.png Many things need image dimensions set, too which will improve your scores. gzip doesn't look to be enabled? Twitter looks to need an update to load asynchronously. Optimizing your images (pngs) and compressing them will also help reduce page size and improve load times.
Page load time: 8.08s Total page size: 2.65MB Total number of requests: 89 A lot of the page needs optimizations and work, but the .htaccess did improve what it could a bit.
 
I hope this helps you get your page optimized.