When Anya comes on to Spike, specifically when she's kissing his neck.....one shot Spike's head is against the wall, the next shot he is away from the wall.
At the end of Conversations with Dead People (2002) Dawn had several cuts all over her face, but at the start of this one she only had one.
After Spike asks a woman at the Bronze if she'd seen the woman he was with before, she says "no, sorry," but her lips don't move when she says sorry.
Spike was supposed to have been given a soul however he is killing again the chip in his brain would have prevented that from happening.