Writely and Google Spreadsheets have merged to become Google Docs and Spreadsheets so both services are presented from the same front end. Makes sense I suppose as a move to providing a more integrated online office applications suite and it brings Writely into the Google camp as far as presentation is concerned.
The main interface now presents you with a list of both documents and spreadsheets and you can now tag and star items for later searching and management. The document and spreadsheet editors have also been homogenised so each shares a similar user interface and the sharing facilities work in the same way too.
Wonder how long it'll be before we get another element added in such as a database or presentation application?