I like that it's easy for my non-technical friends who are not familiar or comfortable using computers, smartphones etc., can easily join in generating Bitcoins! It also has some nice features such us automatic payouts once generated bitcoins reach certain amounts (this feature was previously only available when paying out via PayPal). The interface could be improved but this doesn't really bother me too often since most people just need simple instructions anyway - they don;t want complex interfaces/features if things go wrong / get lost during their first use experience because then there would probably never come back again :) Currently we're able generate more than 1 BTC per day from our computer which makes very little effort compared how many coins one needs nowadays at least 2 years ago before bitcoin started increasing its value exponentially so now everyone wants them all :D.