- horizontal scrollbar on 1280x1024, (don't skip testing these things, it's important)

- 'leave feedback' button overlaps the text on the left side for me, I cannot read it comfortably.

- on http://www.epihu.com/en/peoples , sort based on the number of publicly available slides. No good if there are 100+ and all of them private.

- get some help with the texts, "Why do I need this service when there is a simple blogs?" had wrong singular/plural alignment, you'll be losing customers due to this despite having a good technical product in place.