The best thing about share buttons is that anyone can add them with some basic coding knowledge - no need for any advanced skills or even experience! It's not as easy at it seems like but once you get used they are very simple indeed (and there have been tutorials around).
I dislike how slow loading time takes sometimes when first trying out new sites/but this isn't always an issue though so don;t give up hope just yet if its something annoying then try another option maybe? There were issues initially which meant we had problems uploading our code successfully however over many weeks these errors went away without us doing anything other than waiting patiently until everything was fixed!! We've seen increased traffic since using SHAREBUTTONS because people seem much happier now posting links online easily rather than having difficulty clicking through pages etc before getting where ever one wants too be.