Posting several links is fairly easy.
Open up another browser window (I'm assuming you're using Microsoft Internet Explorer). Go to that second window and look up the link you want. Highlight it (hold down the left mouse click button and hold it down while scrolling through the link), then type <ctrl-C> to place it into the buffer. Now go back to your original page and type <crtl-V> to paste it to your original comment. Nothing you were working on will be lost.
Open up another browser window (I'm assuming you're using Microsoft Internet Explorer). Go to that second window and look up the link you want. Highlight it (hold down the left mouse click button and hold it down while scrolling through the link), then type <ctrl-C> to place it into the buffer. Now go back to your original page and type <crtl-V> to paste it to your original comment. Nothing you were working on will be lost.