Web apps have come a long way, and the overall user experience is pretty much the same as local software: snappy and fast (that is, if you are connected to the Internet). Right-clicking, dragging, drop downs, it all works. Google Presentations is integrated into the Google Drive environment which makes accessing and sharing files really easy.
While I think that PowerPoint is too bloated with features, Google Presentations is still at the other extreme of the spectrum. Here are the things I a missing:
- Big, big problem: you cannot crop images
- Poor integration of data charts (you need to create the chart in a Google Spreadsheet and then copy it across as an image
- If you create custom templates, everyone can see and use them
Google is making huge improvements in the design of its software, gmail, Google+, mobile apps all look fantastic now. Google Spreadsheets are already a workable alternative to Microsoft Excel sheets. With some additional features, Google Presentations can be come a credible PowerPoint alternative as well.