Are these things %20 things in SharePoint links irritating you?
This is how you get them out.
When you create a list, library or site – put the words in the Name together like this, with each word a capital letter :
See how it creates the item on the Quick Launch, (in the case of lists and libraries)? Click on Library / List Settings next. (If it was a site, click on Site Actions – Site Settings – Title, Description and Icon).
Click on Title, Description and Navigation.
And insert the spaces between the words in the Name.
Now click back on your list or library in the Quick Launch and check out the URL. Nice clean URL, nice readable link on your site.
Note : This doesn’t work on document names or Site Page names.