We used to display romaji in Tatoeba... We don't anymore. Well, at least not directly. We are now going to display the reading in hiragana. You can however get the romaji version by hovering your mouse over the hiragana, and wait for the little tooltip to appear.
There has been some discussion about it (like here, here or here), and I think this solution will make everyone happy.
Now, of course, the output generated is not perfect. So if anyone out there is interested to improve the hiragana generated, then please let us know! As much as I agree that the reading is a vital information for Japanese learners, I will NOT have time to make it any better. I'd really, really like if someone could take on this tasks.
For your information, we were using KAKASI in order to convert Japanese text into romaji. We have now switched to MeCab. Our romaji/furigana converter is still based on KAKASI though.