"point of vue" -> point of view
"shell command are executed" -> "shell commands are executed"
"benchmark are here" -> "the benchmarks are here"
Also, heroku works just fine with haskell, as long as you compile a static binary on an ubuntu machine. I compile mine on virtual box (via way of vagrant), and have 3 haskell apps (none of them really production ready though) running on heroku right now.
Lastly, I don't really think haskell is the right language for a lot of web programming. In haskell, you really want your logic to be as purely functional as possible, but that gets pretty hard to do for web apps that rely on external apis.